fixed Makefile to build w/new drivers (thanks Hydra)
int32 updates in sonar driver
added 12mhz buzzer check
Removed debug output from GPS module
int32'ified althold
output HSE MHz+SysClkMHz on debug[3]

git-svn-id: https://afrodevices.googlecode.com/svn/trunk/baseflight@379 7c89a4a9-59b9-e629-4cfe-3a2d53b20e61